30 % Advance and Balance against C.A.D (CASH AGAINST DOCUMENTS)
30 % Advance and Balance against Irrevocable Letter of Credit Payable at Sight.
What is Cash Against Documents?
An arrangement under a Documentary Collection in which an Exporter instructs the presenting bank to hand over shipping and title documents upon receipt of full payment from the Importer. In this way, the Importer cannot take possession of goods without paying.
What is letter of credit?

A standard, commercial letter of credit is a document issued mostly by a financial institution, used primarily in trade finance, which usually provides an irrevocable payment undertaking.
The LC can also be source of payment for a transaction, meaning that redeeming the letter of credit will pay an exporter. Letters of credit are used primarily in international trade transactions of significant value, for deals between a supplier in one country and a customer in another. They are also used in the land development process to ensure that approved public facilities (streets, sidewalks, stormwater ponds, etc.) will be built. The parties to a letter of credit are usually a beneficiary who is to receive the money, the issuing bank of whom the applicant is a client, and the advising bank of whom the beneficiary is a client. Almost all letters of credit are irrevocable, i.e., cannot be amended or cancelled without prior agreement of the beneficiary, the issuing bank and the confirming bank, if any. In executing a transaction, letters of credit incorporate functions common to giros and Traveler's cheques. Typically, the documents a beneficiary has to present in order to receive payment include a commercial invoice, bill of lading, and documents proving the shipment was insured against loss or damage in transit. However, the list and form of documents is open to imagination and negotiation and might contain requirements to present documents issued by a neutral third party evidencing the quality of the goods shipped, or their place of origin.

	After a contract is concluded between buyer and seller, buyer's bank supplies a letter of credit to seller.
	Seller consigns the goods to a carrier in exchange for a bill of lading.
	Seller provides bill of lading to bank in exchange for payment. Seller's bank exchanges bill of lading for payment from buyer's bank. Buyer's bank exchanges bill of lading for payment from the buyer.
	Buyer provides bill of lading to carrier and takes delivery of goods.